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FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp6.h
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1 /* $FreeBSD$ */ 2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifndef _NETINET_ICMP6_H_ 69 #define _NETINET_ICMP6_H_ 70 71 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 72 - sizeof(struct icmp6_hdr) */ 73 74 struct icmp6_hdr { 75 u_int8_t icmp6_type; /* type field */ 76 u_int8_t icmp6_code; /* code field */ 77 u_int16_t icmp6_cksum; /* checksum field */ 78 union { 79 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 80 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 81 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 82 } icmp6_dataun; 83 } __attribute__((__packed__)); 84 85 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 86 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 87 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 88 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 89 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 90 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 91 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 92 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 93 94 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 95 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 96 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 97 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 98 99 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 100 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 101 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 102 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 104 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 106 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 107 108 #ifndef _KERNEL 109 /* the followings are for backward compatibility to old KAME apps. */ 110 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 111 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 112 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 113 #endif 114 115 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 116 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 117 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 118 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 119 #define ND_REDIRECT 137 /* redirect */ 120 121 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 122 123 #define ICMP6_WRUREQUEST 139 /* who are you request */ 124 #define ICMP6_WRUREPLY 140 /* who are you reply */ 125 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 126 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 127 #define ICMP6_NI_QUERY 139 /* node information request */ 128 #define ICMP6_NI_REPLY 140 /* node information reply */ 129 130 /* The definitions below are experimental. TBA */ 131 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 132 #define MLD_MTRACE 201 /* mtrace messages */ 133 134 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 135 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 136 137 #ifndef _KERNEL 138 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 139 #define MLD6_MTRACE MLD_MTRACE 140 #endif 141 142 #define ICMP6_MAXTYPE 203 143 144 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 145 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 146 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 147 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 148 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 149 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 150 151 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 152 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 153 154 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 155 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 156 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 157 158 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 159 160 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 161 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 162 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 163 164 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 165 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 166 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 167 168 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 169 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 170 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 171 172 /* Used in kernel only */ 173 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 174 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 175 176 /* 177 * Multicast Listener Discovery 178 */ 179 struct mld_hdr { 180 struct icmp6_hdr mld_icmp6_hdr; 181 struct in6_addr mld_addr; /* multicast address */ 182 } __attribute__((__packed__)); 183 184 /* definitions to provide backward compatibility to old KAME applications */ 185 #ifndef _KERNEL 186 #define mld6_hdr mld_hdr 187 #define mld6_type mld_type 188 #define mld6_code mld_code 189 #define mld6_cksum mld_cksum 190 #define mld6_maxdelay mld_maxdelay 191 #define mld6_reserved mld_reserved 192 #define mld6_addr mld_addr 193 #endif 194 195 /* shortcut macro definitions */ 196 #define mld_type mld_icmp6_hdr.icmp6_type 197 #define mld_code mld_icmp6_hdr.icmp6_code 198 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 199 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 200 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 201 202 /* 203 * Neighbor Discovery 204 */ 205 206 struct nd_router_solicit { /* router solicitation */ 207 struct icmp6_hdr nd_rs_hdr; 208 /* could be followed by options */ 209 } __attribute__((__packed__)); 210 211 #define nd_rs_type nd_rs_hdr.icmp6_type 212 #define nd_rs_code nd_rs_hdr.icmp6_code 213 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 214 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 215 216 struct nd_router_advert { /* router advertisement */ 217 struct icmp6_hdr nd_ra_hdr; 218 u_int32_t nd_ra_reachable; /* reachable time */ 219 u_int32_t nd_ra_retransmit; /* retransmit timer */ 220 /* could be followed by options */ 221 } __attribute__((__packed__)); 222 223 #define nd_ra_type nd_ra_hdr.icmp6_type 224 #define nd_ra_code nd_ra_hdr.icmp6_code 225 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 226 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 227 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 228 #define ND_RA_FLAG_MANAGED 0x80 229 #define ND_RA_FLAG_OTHER 0x40 230 #define ND_RA_FLAG_HA 0x20 231 232 /* 233 * Router preference values based on draft-draves-ipngwg-router-selection-01. 234 * These are non-standard definitions. 235 */ 236 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 237 238 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 239 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 240 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 241 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 242 243 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 244 245 struct nd_neighbor_solicit { /* neighbor solicitation */ 246 struct icmp6_hdr nd_ns_hdr; 247 struct in6_addr nd_ns_target; /*target address */ 248 /* could be followed by options */ 249 } __attribute__((__packed__)); 250 251 #define nd_ns_type nd_ns_hdr.icmp6_type 252 #define nd_ns_code nd_ns_hdr.icmp6_code 253 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 254 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 255 256 struct nd_neighbor_advert { /* neighbor advertisement */ 257 struct icmp6_hdr nd_na_hdr; 258 struct in6_addr nd_na_target; /* target address */ 259 /* could be followed by options */ 260 } __attribute__((__packed__)); 261 262 #define nd_na_type nd_na_hdr.icmp6_type 263 #define nd_na_code nd_na_hdr.icmp6_code 264 #define nd_na_cksum nd_na_hdr.icmp6_cksum 265 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 266 #if BYTE_ORDER == BIG_ENDIAN 267 #define ND_NA_FLAG_ROUTER 0x80000000 268 #define ND_NA_FLAG_SOLICITED 0x40000000 269 #define ND_NA_FLAG_OVERRIDE 0x20000000 270 #else 271 #if BYTE_ORDER == LITTLE_ENDIAN 272 #define ND_NA_FLAG_ROUTER 0x80 273 #define ND_NA_FLAG_SOLICITED 0x40 274 #define ND_NA_FLAG_OVERRIDE 0x20 275 #endif 276 #endif 277 278 struct nd_redirect { /* redirect */ 279 struct icmp6_hdr nd_rd_hdr; 280 struct in6_addr nd_rd_target; /* target address */ 281 struct in6_addr nd_rd_dst; /* destination address */ 282 /* could be followed by options */ 283 } __attribute__((__packed__)); 284 285 #define nd_rd_type nd_rd_hdr.icmp6_type 286 #define nd_rd_code nd_rd_hdr.icmp6_code 287 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 288 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 289 290 struct nd_opt_hdr { /* Neighbor discovery option header */ 291 u_int8_t nd_opt_type; 292 u_int8_t nd_opt_len; 293 /* followed by option specific data*/ 294 } __attribute__((__packed__)); 295 296 #define ND_OPT_SOURCE_LINKADDR 1 297 #define ND_OPT_TARGET_LINKADDR 2 298 #define ND_OPT_PREFIX_INFORMATION 3 299 #define ND_OPT_REDIRECTED_HEADER 4 300 #define ND_OPT_MTU 5 301 302 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 303 304 struct nd_opt_prefix_info { /* prefix information */ 305 u_int8_t nd_opt_pi_type; 306 u_int8_t nd_opt_pi_len; 307 u_int8_t nd_opt_pi_prefix_len; 308 u_int8_t nd_opt_pi_flags_reserved; 309 u_int32_t nd_opt_pi_valid_time; 310 u_int32_t nd_opt_pi_preferred_time; 311 u_int32_t nd_opt_pi_reserved2; 312 struct in6_addr nd_opt_pi_prefix; 313 } __attribute__((__packed__)); 314 315 #define ND_OPT_PI_FLAG_ONLINK 0x80 316 #define ND_OPT_PI_FLAG_AUTO 0x40 317 318 struct nd_opt_rd_hdr { /* redirected header */ 319 u_int8_t nd_opt_rh_type; 320 u_int8_t nd_opt_rh_len; 321 u_int16_t nd_opt_rh_reserved1; 322 u_int32_t nd_opt_rh_reserved2; 323 /* followed by IP header and data */ 324 } __attribute__((__packed__)); 325 326 struct nd_opt_mtu { /* MTU option */ 327 u_int8_t nd_opt_mtu_type; 328 u_int8_t nd_opt_mtu_len; 329 u_int16_t nd_opt_mtu_reserved; 330 u_int32_t nd_opt_mtu_mtu; 331 } __attribute__((__packed__)); 332 333 struct nd_opt_route_info { /* route info */ 334 u_int8_t nd_opt_rti_type; 335 u_int8_t nd_opt_rti_len; 336 u_int8_t nd_opt_rti_prefixlen; 337 u_int8_t nd_opt_rti_flags; 338 u_int32_t nd_opt_rti_lifetime; 339 /* prefix follows */ 340 } __attribute__((__packed__)); 341 342 /* 343 * icmp6 namelookup 344 */ 345 346 struct icmp6_namelookup { 347 struct icmp6_hdr icmp6_nl_hdr; 348 u_int8_t icmp6_nl_nonce[8]; 349 int32_t icmp6_nl_ttl; 350 #if 0 351 u_int8_t icmp6_nl_len; 352 u_int8_t icmp6_nl_name[3]; 353 #endif 354 /* could be followed by options */ 355 } __attribute__((__packed__)); 356 357 /* 358 * icmp6 node information 359 */ 360 struct icmp6_nodeinfo { 361 struct icmp6_hdr icmp6_ni_hdr; 362 u_int8_t icmp6_ni_nonce[8]; 363 /* could be followed by reply data */ 364 } __attribute__((__packed__)); 365 366 #define ni_type icmp6_ni_hdr.icmp6_type 367 #define ni_code icmp6_ni_hdr.icmp6_code 368 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 369 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 370 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 371 372 #define NI_QTYPE_NOOP 0 /* NOOP */ 373 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 374 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 375 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 376 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 377 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 378 379 #if BYTE_ORDER == BIG_ENDIAN 380 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 381 #define NI_FQDN_FLAG_VALIDTTL 0x1 382 #elif BYTE_ORDER == LITTLE_ENDIAN 383 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 384 #define NI_FQDN_FLAG_VALIDTTL 0x0100 385 #endif 386 387 #ifdef NAME_LOOKUPS_04 388 #if BYTE_ORDER == BIG_ENDIAN 389 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 390 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 391 #define NI_NODEADDR_FLAG_GLOBAL 0x4 392 #define NI_NODEADDR_FLAG_ALL 0x8 393 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 394 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 395 #elif BYTE_ORDER == LITTLE_ENDIAN 396 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 397 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 398 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 399 #define NI_NODEADDR_FLAG_ALL 0x0800 400 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 401 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 402 #endif 403 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 404 #if BYTE_ORDER == BIG_ENDIAN 405 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 406 #define NI_NODEADDR_FLAG_ALL 0x2 407 #define NI_NODEADDR_FLAG_COMPAT 0x4 408 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 409 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 410 #define NI_NODEADDR_FLAG_GLOBAL 0x20 411 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 412 #elif BYTE_ORDER == LITTLE_ENDIAN 413 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 414 #define NI_NODEADDR_FLAG_ALL 0x0200 415 #define NI_NODEADDR_FLAG_COMPAT 0x0400 416 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 417 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 418 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 419 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 420 #endif 421 #endif 422 423 struct ni_reply_fqdn { 424 u_int32_t ni_fqdn_ttl; /* TTL */ 425 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 426 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 427 } __attribute__((__packed__)); 428 429 /* 430 * Router Renumbering. as router-renum-08.txt 431 */ 432 struct icmp6_router_renum { /* router renumbering header */ 433 struct icmp6_hdr rr_hdr; 434 u_int8_t rr_segnum; 435 u_int8_t rr_flags; 436 u_int16_t rr_maxdelay; 437 u_int32_t rr_reserved; 438 } __attribute__((__packed__)); 439 440 #define ICMP6_RR_FLAGS_TEST 0x80 441 #define ICMP6_RR_FLAGS_REQRESULT 0x40 442 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 443 #define ICMP6_RR_FLAGS_SPECSITE 0x10 444 #define ICMP6_RR_FLAGS_PREVDONE 0x08 445 446 #define rr_type rr_hdr.icmp6_type 447 #define rr_code rr_hdr.icmp6_code 448 #define rr_cksum rr_hdr.icmp6_cksum 449 #define rr_seqnum rr_hdr.icmp6_data32[0] 450 451 struct rr_pco_match { /* match prefix part */ 452 u_int8_t rpm_code; 453 u_int8_t rpm_len; 454 u_int8_t rpm_ordinal; 455 u_int8_t rpm_matchlen; 456 u_int8_t rpm_minlen; 457 u_int8_t rpm_maxlen; 458 u_int16_t rpm_reserved; 459 struct in6_addr rpm_prefix; 460 } __attribute__((__packed__)); 461 462 #define RPM_PCO_ADD 1 463 #define RPM_PCO_CHANGE 2 464 #define RPM_PCO_SETGLOBAL 3 465 #define RPM_PCO_MAX 4 466 467 struct rr_pco_use { /* use prefix part */ 468 u_int8_t rpu_uselen; 469 u_int8_t rpu_keeplen; 470 u_int8_t rpu_ramask; 471 u_int8_t rpu_raflags; 472 u_int32_t rpu_vltime; 473 u_int32_t rpu_pltime; 474 u_int32_t rpu_flags; 475 struct in6_addr rpu_prefix; 476 } __attribute__((__packed__)); 477 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 478 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 479 480 #if BYTE_ORDER == BIG_ENDIAN 481 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 482 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 483 #elif BYTE_ORDER == LITTLE_ENDIAN 484 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 485 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 486 #endif 487 488 struct rr_result { /* router renumbering result message */ 489 u_int16_t rrr_flags; 490 u_int8_t rrr_ordinal; 491 u_int8_t rrr_matchedlen; 492 u_int32_t rrr_ifid; 493 struct in6_addr rrr_prefix; 494 } __attribute__((__packed__)); 495 #if BYTE_ORDER == BIG_ENDIAN 496 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 497 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 498 #elif BYTE_ORDER == LITTLE_ENDIAN 499 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 500 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 501 #endif 502 503 /* 504 * icmp6 filter structures. 505 */ 506 507 struct icmp6_filter { 508 u_int32_t icmp6_filt[8]; 509 }; 510 511 #ifdef _KERNEL 512 #define ICMP6_FILTER_SETPASSALL(filterp) \ 513 do { \ 514 int i; u_char *p; \ 515 p = (u_char *)filterp; \ 516 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 517 p[i] = 0xff; \ 518 } while (0) 519 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 520 bzero(filterp, sizeof(struct icmp6_filter)) 521 #else /* _KERNEL */ 522 #define ICMP6_FILTER_SETPASSALL(filterp) \ 523 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 524 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 525 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 526 #endif /* _KERNEL */ 527 528 #define ICMP6_FILTER_SETPASS(type, filterp) \ 529 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 530 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 531 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 532 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 533 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 534 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 535 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 536 537 /* 538 * Variables related to this implementation 539 * of the internet control message protocol version 6. 540 */ 541 struct icmp6errstat { 542 u_quad_t icp6errs_dst_unreach_noroute; 543 u_quad_t icp6errs_dst_unreach_admin; 544 u_quad_t icp6errs_dst_unreach_beyondscope; 545 u_quad_t icp6errs_dst_unreach_addr; 546 u_quad_t icp6errs_dst_unreach_noport; 547 u_quad_t icp6errs_packet_too_big; 548 u_quad_t icp6errs_time_exceed_transit; 549 u_quad_t icp6errs_time_exceed_reassembly; 550 u_quad_t icp6errs_paramprob_header; 551 u_quad_t icp6errs_paramprob_nextheader; 552 u_quad_t icp6errs_paramprob_option; 553 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 554 u_quad_t icp6errs_unknown; 555 }; 556 557 struct icmp6stat { 558 /* statistics related to icmp6 packets generated */ 559 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 560 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 561 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 562 u_quad_t icp6s_outhist[256]; 563 /* statistics related to input message processed */ 564 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 565 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 566 u_quad_t icp6s_checksum; /* bad checksum */ 567 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 568 /* 569 * number of responses: this member is inherited from netinet code, but 570 * for netinet6 code, it is already available in icp6s_outhist[]. 571 */ 572 u_quad_t icp6s_reflect; 573 u_quad_t icp6s_inhist[256]; 574 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 575 struct icmp6errstat icp6s_outerrhist; 576 #define icp6s_odst_unreach_noroute \ 577 icp6s_outerrhist.icp6errs_dst_unreach_noroute 578 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 579 #define icp6s_odst_unreach_beyondscope \ 580 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 581 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 582 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 583 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 584 #define icp6s_otime_exceed_transit \ 585 icp6s_outerrhist.icp6errs_time_exceed_transit 586 #define icp6s_otime_exceed_reassembly \ 587 icp6s_outerrhist.icp6errs_time_exceed_reassembly 588 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 589 #define icp6s_oparamprob_nextheader \ 590 icp6s_outerrhist.icp6errs_paramprob_nextheader 591 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 592 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 593 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 594 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 595 u_quad_t icp6s_nd_badopt; /* bad ND options */ 596 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 597 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 598 u_quad_t icp6s_badrs; /* bad router advertisement */ 599 u_quad_t icp6s_badra; /* bad router advertisement */ 600 u_quad_t icp6s_badredirect; /* bad redirect message */ 601 }; 602 603 /* 604 * Names for ICMP sysctl objects 605 */ 606 #define ICMPV6CTL_STATS 1 607 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 608 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 609 #if 0 /*obsoleted*/ 610 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 611 #endif 612 #define ICMPV6CTL_ND6_PRUNE 6 613 #define ICMPV6CTL_ND6_DELAY 8 614 #define ICMPV6CTL_ND6_UMAXTRIES 9 615 #define ICMPV6CTL_ND6_MMAXTRIES 10 616 #define ICMPV6CTL_ND6_USELOOPBACK 11 617 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 618 #define ICMPV6CTL_NODEINFO 13 619 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 620 #define ICMPV6CTL_ND6_MAXNUDHINT 15 621 #define ICMPV6CTL_MTUDISC_HIWAT 16 622 #define ICMPV6CTL_MTUDISC_LOWAT 17 623 #define ICMPV6CTL_ND6_DEBUG 18 624 #define ICMPV6CTL_ND6_DRLIST 19 625 #define ICMPV6CTL_ND6_PRLIST 20 626 #define ICMPV6CTL_MAXID 21 627 628 #define ICMPV6CTL_NAMES { \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { "rediraccept", CTLTYPE_INT }, \ 632 { "redirtimeout", CTLTYPE_INT }, \ 633 { 0, 0 }, \ 634 { 0, 0 }, \ 635 { "nd6_prune", CTLTYPE_INT }, \ 636 { 0, 0 }, \ 637 { "nd6_delay", CTLTYPE_INT }, \ 638 { "nd6_umaxtries", CTLTYPE_INT }, \ 639 { "nd6_mmaxtries", CTLTYPE_INT }, \ 640 { "nd6_useloopback", CTLTYPE_INT }, \ 641 { 0, 0 }, \ 642 { "nodeinfo", CTLTYPE_INT }, \ 643 { "errppslimit", CTLTYPE_INT }, \ 644 { "nd6_maxnudhint", CTLTYPE_INT }, \ 645 { "mtudisc_hiwat", CTLTYPE_INT }, \ 646 { "mtudisc_lowat", CTLTYPE_INT }, \ 647 { "nd6_debug", CTLTYPE_INT }, \ 648 { 0, 0 }, \ 649 { 0, 0 }, \ 650 } 651 652 #define RTF_PROBEMTU RTF_PROTO1 653 654 #ifdef _KERNEL 655 # ifdef __STDC__ 656 struct rtentry; 657 struct rttimer; 658 struct in6_multi; 659 # endif 660 void icmp6_init __P((void)); 661 void icmp6_paramerror __P((struct mbuf *, int)); 662 void icmp6_error __P((struct mbuf *, int, int, int)); 663 int icmp6_input __P((struct mbuf **, int *, int)); 664 void icmp6_fasttimo __P((void)); 665 void icmp6_reflect __P((struct mbuf *, size_t)); 666 void icmp6_prepare __P((struct mbuf *)); 667 void icmp6_redirect_input __P((struct mbuf *, int)); 668 void icmp6_redirect_output __P((struct mbuf *, struct rtentry *)); 669 670 struct ip6ctlparam; 671 void icmp6_mtudisc_update __P((struct ip6ctlparam *, int)); 672 673 /* XXX: is this the right place for these macros? */ 674 #define icmp6_ifstat_inc(ifp, tag) \ 675 do { \ 676 if ((ifp) && (ifp)->if_index <= if_index \ 677 && (ifp)->if_index < icmp6_ifstatmax \ 678 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) { \ 679 icmp6_ifstat[(ifp)->if_index]->tag++; \ 680 } \ 681 } while (0) 682 683 #define icmp6_ifoutstat_inc(ifp, type, code) \ 684 do { \ 685 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 686 if (type < ICMP6_INFOMSG_MASK) \ 687 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 688 switch(type) { \ 689 case ICMP6_DST_UNREACH: \ 690 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 691 if (code == ICMP6_DST_UNREACH_ADMIN) \ 692 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 693 break; \ 694 case ICMP6_PACKET_TOO_BIG: \ 695 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 696 break; \ 697 case ICMP6_TIME_EXCEEDED: \ 698 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 699 break; \ 700 case ICMP6_PARAM_PROB: \ 701 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 702 break; \ 703 case ICMP6_ECHO_REQUEST: \ 704 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 705 break; \ 706 case ICMP6_ECHO_REPLY: \ 707 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 708 break; \ 709 case MLD_LISTENER_QUERY: \ 710 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 711 break; \ 712 case MLD_LISTENER_REPORT: \ 713 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 714 break; \ 715 case MLD_LISTENER_DONE: \ 716 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 717 break; \ 718 case ND_ROUTER_SOLICIT: \ 719 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 720 break; \ 721 case ND_ROUTER_ADVERT: \ 722 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 723 break; \ 724 case ND_NEIGHBOR_SOLICIT: \ 725 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 726 break; \ 727 case ND_NEIGHBOR_ADVERT: \ 728 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 729 break; \ 730 case ND_REDIRECT: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 732 break; \ 733 } \ 734 } while (0) 735 736 extern int icmp6_rediraccept; /* accept/process redirects */ 737 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 738 #endif /* _KERNEL */ 739 740 #endif /* not _NETINET_ICMP6_H_ */
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